TWI522929B - Touch panel capable of identifying fingerprints - Google Patents

Description

Fingerprint recognition touch panel

A touch panel with fingerprint recognition, which integrates a fingerprint recognition chip into a touch panel with a fingerprint recognition on a touch panel.

With the rapid development of multimedia technology, more and more smart portable electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, personal notebook computers or tablets or wearable devices have become people. A must-have tool in life. However, these portable electronic devices are highly personal. Therefore, once these portable electronic devices are lost or stolen, the information stored therein, such as phone books, photos, materials, etc., may be used by others, causing unnecessary losses.

Therefore, such products need to be matched with certain identity authentication and permission management to ensure the privacy of users. The main method of identity authentication currently used is password protection, and the user needs to input the correct password to the portable electronic device before entering the control page of the portable electronic device. However, password protection is less secure because passwords are more likely to be compromised or compromised. And if the user forgets the password, it is also very troublesome. Therefore, there is a portable electronic device that uses fingerprint identification for identity authentication. Since each person's fingerprints are different, the unique characteristics of the fingerprints make the security of identity authentication using fingerprint identification. Improve a lot. Moreover, the method of using identity authentication using fingerprint identification is relatively convenient, so that the user can save the cumbersome memory and password entry.

The current fingerprint identification system is widely used in handheld devices or mobile devices. The most common fingerprint identification devices are independently designed, for example, on a fixed side of a notebook computer keyboard or a fixed position on the back side or the bottom side of a hand-held mobile device. It cannot be effectively integrated on the touch screen of the handheld mobile device to reduce the volume of the handheld mobile device, and the conventional fingerprint identification chip package module mainly includes a substrate, a wafer and a mold body. The wafer is disposed on the substrate and electrically connected to the substrate, and the mold body covers the surface of the substrate and the wafer.

Generally, when a finger touches a sensing area of a wafer, since the outer surface of the wafer is covered with a multilayer film, the overall thickness of the chip package module is high, and the chip package module has low sensitivity.

In addition, the conventional slip fingerprint identification system has directionality, and the recognition time is too long and must be set independently, which is very poor in structural integration or ease of use.

Therefore, in order to effectively solve the above problems, the main object of the present invention is to provide a touch panel with fingerprint recognition that integrates a fingerprint identification chip and a touch panel.

In order to achieve the above object, the present invention provides a touch panel with fingerprint recognition, comprising: a glass substrate, an electrode layer, a first insulating layer, a second insulating layer, and a fingerprint sensing layer; The first plane defines a touch area and a non-touch area, and the non-touch area is adjacent to the touch area; the electrode layer is disposed on the glass substrate a second plane, the electrode layer has a plurality of first electrodes and a plurality of second electrodes and a plurality of metal traces, and the first and second electrodes are selectively electrically connected to the metal traces; the first insulating layer covers the portion The first and second electrode junctions; the second insulating layer covers the electrode layer; The fingerprint recognition sensing layer is disposed on the second insulating layer and has a plurality of fingerprint identification chips and a plurality of transmission wires, and the fingerprint identification chips are electrically connected to the transmission wires. By integrating the fingerprint recognition chip on the touch panel, the manufacturing cost can be saved, and the touch sensitivity and accuracy can be improved.

1‧‧‧Touch Panel with Fingerprint Identification

11‧‧‧ glass substrate

11a‧‧‧ first plane

11b‧‧‧ second plane

11c‧‧‧ touch area

11d‧‧‧ non-touch area

12‧‧‧electrode layer

121‧‧‧First electrode

122‧‧‧second electrode

123‧‧‧Metal routing

13‧‧‧First insulation

14‧‧‧Second insulation

15‧‧‧Fingerprint sensing layer

151‧‧‧Fingerprint identification chip

151a‧‧ Sensing area

151b‧‧‧ top

152‧‧‧Transmission wire

153‧‧‧Metal wire

16‧‧‧Shielding layer

17‧‧‧Protective layer

1 is a perspective exploded view of a first embodiment of a touch panel with fingerprint identification according to the present invention; and FIG. 2 is a cross-sectional view of a first embodiment of a touch panel with fingerprint identification according to the present invention; 3 is a cross-sectional view of a second embodiment of a touch panel with fingerprint identification according to the present invention; and FIG. 4 is a cross-sectional view of a combination of a third embodiment of the touch panel with fingerprint identification of the present invention; The figure is a top view of the fingerprint identification layer of the fourth embodiment of the touch panel with fingerprint identification of the present invention; and FIG. 5a is a partial enlarged view of the fifth embodiment of the touch panel with fingerprint identification of the present invention.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

1 and 2 are a perspective exploded view and a combined cross-sectional view of a first embodiment of a touch panel with fingerprint identification according to the present invention. As shown in the figure, the touch panel 1 with fingerprint identification of the present invention includes: a glass substrate 11, an electrode layer 12, a first insulating layer 13, a second insulating layer 14, and a fingerprint sensing layer 15; the glass substrate 11 has a first plane 11a and a second plane 11b. The first plane 11a defines a touch area 11c and a non-touch area 11d. The non-touch area 11d is adjacent to the touch area 11c, and the non-touch area 11d is disposed outside the touch area 11c. The first and second planes 11a and 11b are divided into upper and lower sides of the glass substrate 11.

The electrode layer 12 is disposed on the second plane 11b of the glass substrate 11. The electrode layer 12 has a plurality of first electrodes 121 and a plurality of second electrodes 122 and a plurality of metal traces 123. The first and second electrodes 121 and 122 The metal traces 123 are electrically connected to the metal traces 123. The metal traces 123 are disposed on the non-touch regions 11d of the second plane 11b of the glass substrate 11.

The first insulating layer 13 covers the intersection of the first and second electrodes 121 and 122. When the first and second electrodes 121 and 122 are wired, a part of the area will overlap and be covered by the first insulating layer 13. The first and second electrodes 121 and 122 are connected to each other such that the first electrode 121 or the second electrode 122 can smoothly bridge the extension wiring.

The second insulating layer 14 covers the electrode layer 12 and completely covers the first and second electrodes 121 and 122 and the first insulating layer 13 and the metal traces 123 to ensure the insulation effect.

The fingerprint recognition sensing layer 15 is disposed on the second insulating layer 14 and has a plurality of fingerprint identification chips 151 and a plurality of transmission wires 152. The fingerprint identification chips 151 are electrically connected to the transmission wires 152. The fingerprint recognition wafer 151 has a sensing area 151a and a top surface 151b, wherein the sensing area 151a is formed on the top surface 151b.

The invention mainly integrates the plurality of fingerprint identification chips 151 in the fingerprint recognition sensing layer 15 and the electrode layer 12 in the touch area 11c, so as to improve the touch accuracy and save the manufacturing cost.

Referring to FIG. 3, it is a sectional view of a combination of the second embodiment of the fingerprint panel of the present invention. As shown in the figure, the structural features of the embodiment are the same as those of the first embodiment. The difference between the present embodiment and the foregoing first embodiment is that the touch panel 1 with fingerprint identification further has a shielding layer 16 , and the shielding layer 16 is disposed on the glass substrate 11 . The non-touch area 11b of the second plane 11d, and the shielding layer 16 is disposed between the glass substrate 11 and the metal trace 123, and the shielding layer 16 can shield the metal traces 123 from exposure to outer.

Please refer to FIG. 4, which is a group of a third embodiment of the touch panel with fingerprint identification of the present invention. The cross-sectional view of the figure is shown in the figure. The structural features of the embodiment are the same as those of the first embodiment, and therefore will not be described here. However, the difference between the embodiment and the first embodiment is that the fingerprint is The touch panel 1 has a protective layer 17 covering the fingerprint sensing layer 15 and the protective layer 17 is made of epoxy resin or acrylic resin or silicone, and the protective layer 17 The back side of the fingerprint recognition sensing layer 15 is prevented from being exposed to the outside.

Please refer to FIG. 5 and FIG. 5a, which are top view and partial enlarged view of the fingerprint identification layer of the fourth embodiment of the touch panel with fingerprint identification according to the present invention. As shown in the figure, some structural technical features of the embodiment are The foregoing first embodiment is the same, and therefore will not be described herein again. However, the difference between the embodiment and the foregoing first embodiment is that the fingerprint identification layer 15 has a plurality of metal wires 153, and the metal wires 153 are transparent. And disposed adjacent to the fingerprint identification wafer 151, the metal wire 153 is disposed mainly to enhance the recognition rate of the fingerprint recognition chip 151 for fingerprint recognition.

1‧‧‧Touch Panel with Fingerprint Identification

11‧‧‧ glass substrate

11a‧‧‧ first plane

11b‧‧‧ second plane

11c‧‧‧ touch area

11d‧‧‧ non-touch area

12‧‧‧electrode layer

121‧‧‧First electrode

122‧‧‧second electrode

123‧‧‧Metal routing

13‧‧‧First insulation

14‧‧‧Second insulation

15‧‧‧Fingerprint sensing layer

151‧‧‧Fingerprint identification chip

151a‧‧ Sensing area

151b‧‧‧ top

152‧‧‧Transmission wire

Claims (7)

A touch panel with fingerprint recognition includes: a glass substrate having a first plane and a second plane disposed on the upper and lower sides of the glass substrate, and defining a touch on the first plane And the non-touch area adjacent to the touch area; an electrode layer disposed on the second plane of the glass substrate, the electrode layer having a plurality of first electrodes and a plurality of second electrodes and a plurality of a metal trace, the first and second electrodes are selectively electrically connected to the metal traces; a first insulating layer covering the first and second electrode junctions; and a second insulating layer covering the electrode layers; A fingerprint identification sensing layer is disposed on the second insulating layer and has a plurality of fingerprint identification chips and a plurality of transmission wires, and the fingerprint identification chips are electrically connected to the transmission lines. The touch panel with fingerprint identification as described in claim 1, wherein the fingerprint identification chip has a sensing area and a top surface, wherein the sensing area is formed on the top surface. The touch panel with fingerprint identification according to the first aspect of the invention, further comprising a shielding layer, wherein the shielding layer is disposed on the non-touch area of the second plane of the glass substrate, and the shielding layer It is disposed between the glass substrate and the metal trace. The touch panel with fingerprint identification as described in claim 1 further includes a protective layer covering the fingerprint identification layer, and the protective layer is made of epoxy resin or acrylic resin or silicone rubber. Any of them. The touch panel with fingerprint identification as described in claim 1, wherein the metal trace is disposed in the non-touch area. The touch panel with fingerprint identification according to claim 1, wherein the fingerprint identification layer has a plurality of metal wires, and the metal wires are transparent and the fingerprints are Identify wafer adjacent settings. The touch panel with fingerprint identification as described in claim 1, wherein the non-touch area is disposed outside the touch area.